Chapter 9: data-channel configuration – Black Box 5000 User Manual
Page 93
CHAPTER 9: Data-Channel Configuration
91
Table 9-6. CCM and 6-Channel CEM (MX215C only)
Local Sync Channel Interface Configured to DTE
Multiserver
DTE
Constant
Controlled
Pin
I/O
Carrier Mode
Carrier Mode
Pin
I/O
Signal
4
I
Off-to-On transition
On-to-Off transition
4
O
RTS
raises CTS.
forces CTS off
5
O
Set on after RTS goes on. Set off when RTS goes off.
5
I
CTS
8
O
Forced ON.
Set on when Multiserver
8
I
CD
has output data. Set off
when all data delivered.
22
O
2 seconds on/4 seconds off when start ring frame received
22
I
RI
from remote unit. It is held off when stop ring frame is
received from remote unit or when DTR is on
(Bell 103 emulation).
20
I
Send changed to remote unit as detected. DTR on holds
20
O
DTR
RI off.
6
O
Change as dictated by remote unit.
6
I
DSR
25
I
Send changes to remote unit as detected.
25
O
BUSY
11
I
Not used.
Not used.
11
O
Unassigned
15
O
Not affected by carrier mode.
15
I
TX Clock
17
O
Not affected by carrier mode.
17
I
RX Clock
18
I
Not affected by carrier mode.
18
O
External
RX Clock
24
I
Not affected by carrier mode.
24
O
External
TX Clock
Key:
I = input; O = output